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DRL bulbs, also known as Daytime Running Lights, are specialized automotive lighting components designed to improve vehicle visibility during daylight hours. They emit a lower intensity light compared to headlights, ensuring optimal conspicuity without causing glare for oncoming drivers. These bulbs contribute significantly to road safety by making cars more noticeable, thereby reducing the risk of accidents. DRL bulbs are typically installed in the front of the vehicle and can be found in various automotive applications, including but not limited to brake lights, headlights, and other automotive lighting systems.